On Tue, May 8, 2018 at 8:00 AM, Duy Nguyen <pclouds@xxxxxxxxx> wrote:
> On Tue, May 8, 2018 at 12:59 AM, Stefan Beller <sbeller@xxxxxxxxxx> wrote:
>> @@ -501,9 +509,31 @@ void raw_object_store_clear(struct raw_object_store *o)
>> void parsed_object_pool_clear(struct parsed_object_pool *o)
>> {
>> /*
>> - * TOOD free objects in o->obj_hash.
>> - *
>> * As objects are allocated in slabs (see alloc.c), we do
>> * not need to free each object, but each slab instead.
>> + *
>> + * Before doing so, we need to free any additional memory
>> + * the objects may hold.
>> */
>> + unsigned i;
>> +
>> + for (i = 0; i < o->obj_hash_size; i++) {
>> + struct object *obj = o->obj_hash[i];
>> +
>> + if (!obj)
>> + continue;
>> +
>> + if (obj->type == OBJ_TREE) {
>> + free(((struct tree*)obj)->buffer);
>
> It would be nicer to keep this in separate functions, e.g.
> release_tree_node() and release_commit_node() to go with
> alloc_xxx_node().
ok, I can introduce that, although it seems unnecessary complicated
for now.
On top of this series I started an experiment (which rewrites alloc
and object.c a whole lot more; for performance reasons), which gets
rid of the multiple alloc_states. There will be only one allocation for
one repository, it can allocate across multiple types without alignment
overhead. It will reduce memory footprint of obj_hash by half, via
storing indexes instead of pointers in there.
That said, the experiment shall not influence the
direction of this series. Will fix.
>> + } else if (obj->type == OBJ_COMMIT) {
>> + free_commit_list(((struct commit*)obj)->parents);
>> + free(&((struct commit*)obj)->util);
>> + }
>> + }
>
> I still don't see who frees obj_hash[] (or at least clears it if not
> freed). If I'm going to use this to free memory in pack-objects then
> I'd really prefer obj_hash[] freed because it's a big _big_ array.
gah!
> Just to be clear, what I mean is
>
> FREE_AND_NULL(o->obj_hash);
> o->obj_hash_size = 0;
ok, I just put it here, just before the calls
to clear_alloc_state()s.
